package com.qfedu.entity.course01;

public class Node<E> {
    public E item;
    public Node<E> next;
//    public Node<E> pre;

    public Node() {
    }

    public Node(E element) {
        this.item = element;
    }

    public Node(E element, Node<E> next) {
        this.item = element;
        this.next = next;
    }
}